I was hoping for a more specific answer but you were spot on too!

 

Im the owner of the G35 with the Nismo and Im going to be taken off my Nismo muffler tomorrow to put on my Nismo Diffuser and put some washers on it so it'll fit with my diffuser. Ill make a VIDEO on how my Nismo exhaust will sound with a muffler delete. Oh yeah and Im going to be polishing up the muffler while its off =)

 

Oh yeah if you guys can help me out here. Is it normal for my intake to be making that sucking in hissing noise at .10 seconds in the video? I only have a K&N filter and Z-Tube.

 

Anyone?

 

its normal

 

I have my HKS Hi power exhaust but I also run an electronic cut out just past the down pipe that I can open from the comfort of my seat. It is an amazing sound at full throttle under boost!

https://g35driver.com/forums/ohio-g-...enia-ohio.html

Here are some vids of my G running with the ecut outs open down the 1320 at kilkare raceway a few weeks ago. post #8 if you were interested in hearing it at WOT